35KV handcart suitable for high altitude

Abstract

The utility model relates to the technical field of high-altitude circuit breaker handcarts, and provides a 35KV handcart suitable for high altitude, which comprises a mounting seat arranged on a switch cabinet; the case is arranged on the mounting seat in a sliding manner; the lead screw is rotationally arranged on the mounting base, the case is arranged on the lead screw in a threaded mode, and after the lead screw rotates, the case moves in the axial direction of the lead screw. According to the technical scheme, the problems that in the prior art, manual sliding is needed in the process that an existing circuit breaker handcart slides into or slides out of a switch cabinet, working efficiency is poor, and life safety of workers is possibly caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-altitude circuit breaker trolleys, and specifically, to a 35KV trolley suitable for high altitudes. Background Art

[0002] In modern power systems, high-voltage switchgear, as a key component of the power transmission and distribution network, plays a vital role in the operation, maintenance, fault isolation and protection of power systems. Especially in high-altitude areas, due to the decrease in atmospheric pressure and air density, more stringent requirements are placed on the heat dissipation performance, insulation strength and working characteristics of electrical equipment. In high-altitude environments, conventional high-voltage switchgear may not operate normally due to the degradation of insulation performance and deterioration of heat dissipation conditions. Therefore, high-voltage switchgear specially designed for high-altitude conditions is required. As a common high-voltage switchgear, 35KV trolley-type circuit breakers are widely used in substations, power plants and various industrial sites. The trolley-type design allows the circuit breaker to be repaired and replaced without interrupting the power supply to the system, significantly improving the reliability and flexibility of the power system. For high-altitude applications, such trolley-type circuit breakers not only need to have excellent electrical performance, such as enhanced insulation materials and designs to resist the risk of voltage breakdown under low air pressure, but also need to have a specially designed cooling system to ensure effective heat dissipation under lower air density. With the advancement of science and technology and the growth of market demand, the research and development and manufacture of 35KV trolley-type circuit breakers that meet the standards for high-altitude use have become an urgent task in the industry. Such products usually have a high-strength insulation level, can adapt to various harsh environmental conditions such as high altitude, humidity, and dirt, and can maintain stable and reliable operating performance under these conditions, thereby ensuring the safe and stable power supply of power facilities in high-altitude areas. However, the existing circuit breaker trolley needs to slide in or out of the switch cabinet manually, which has poor work efficiency and may cause life safety problems for workers. Utility Model Content

[0003] The utility model proposes a 35KV trolley suitable for high altitudes, which solves the problem that the existing circuit breaker trolley in the related art needs manual sliding during the process of sliding into or out of the switch cabinet, has poor work efficiency, and may cause life safety problems for workers.

[0004] The technical solution of the utility model is as follows:

[0005] A 35KV handcart suitable for high altitude, including:

[0006] A mounting base, used for being mounted on a switch cabinet;

[0007] A chassis, slidably disposed on the mounting seat;

[0008] The lead screw is rotatably arranged on the mounting seat, and the chassis is threadedly arranged on the lead screw. After the lead screw rotates, the chassis moves along the axial direction of the lead screw.

[0009] As a further technical solution, it also includes:

[0010] A lightning arrester is arranged on the chassis;

[0011] A lightning protection counter is arranged on the chassis, the lightning protection counter is connected to the lightning arrester, and the lightning protection counter is used to detect the lightning arrester.

[0012] As a further technical solution, it also includes:

[0013] A plurality of voltage transformers are provided, and the plurality of voltage transformers are all arranged on the chassis;

[0014] A trolley contact arm is arranged on the chassis;

[0015] A plum blossom contact is arranged on the trolley contact arm, and the plum blossom contact is used to abut against the switch cabinet contact.

[0016] As a further technical solution, it also includes:

[0017] An insulating baffle is arranged on the chassis and located on one side of the voltage transformer. The insulating baffle is used to isolate the voltage transformer from the switch cabinet.

[0018] As a further technical solution, the insulating baffle includes:

[0019] A basic insulation unit, wherein the basic insulation unit is made of high-performance silicone rubber or ceramic material and is located close to a side of the voltage transformer;

[0020] A composite reinforcement layer is provided on the basic insulation unit, wherein the composite reinforcement layer is one or more layers of nanocomposite material coating;

[0021] An elastic buffer structure is arranged between the chassis and the composite reinforcement layer, and the elastic buffer structure is used to provide a force to keep the composite reinforcement layer away from the chassis.

[0022] As a further technical solution, it also includes:

[0023] The detuning device is arranged on the chassis.

[0024] As a further technical solution, it also includes:

[0025] An aviation plug is arranged on the chassis and is used to connect to external electrical components.

[0026] As a further technical solution, a plurality of observation windows are provided on the chassis, and the observation windows are used to observe the interior of the chassis.

[0027] As a further technical solution, the high-altitude 35KV handcart is characterized by also including:

[0028] There are several rollers, which are arranged on the chassis, and the several rollers are all located at the bottom of the chassis.

[0029] As a further technical solution, it also includes:

[0030] A handle is arranged at one end of the lead screw.

[0031] The working principle and beneficial effects of the utility model are:

[0032] In the present utility model, a 35KV intelligent electric operated trolley suitable for high altitude environment is provided. The main improvement is that the trolley can be automatically moved in and out through the mechanical transmission structure, which greatly improves the work efficiency and enhances the safety of operation. Specifically, the 35KV trolley mainly includes the following components: 1. Mounting seat: First, a sturdy and durable mounting seat is designed, which is precisely fixed in the preset position inside the switch cabinet to ensure good docking and stable support with the switch cabinet. 2. Chassis: The chassis contains the main body of the high-voltage circuit breaker and other key electrical components, which form a sliding fit relationship with the mounting seat through the slide rail and can move smoothly back and forth on the mounting seat. In order to adapt to the harsh environment of high altitude areas, the chassis is made of reinforced insulating material and is processed by special process to improve its insulation performance and mechanical strength in low pressure environment. 3. Screw drive mechanism: The screw drive design is innovatively introduced, the screw is rotated and set inside the mounting seat, and the chassis is connected to the screw by threading. When the lead screw rotates driven by the motor, based on the principle of the lead screw nut, the chassis will achieve precise and smooth linear movement along the axial direction of the lead screw, thereby completing the automatic forward and backward operation of the trolley. Through the above design, the staff only needs to start the motor through remote control or panel operation to drive the lead screw to rotate, thereby driving the trolley to automatically slide in or out of the switch cabinet, completely avoiding the inefficiency and safety hazards caused by traditional manual pushing. This design is particularly suitable for the operation of power facilities in high-altitude areas. It not only meets the high-performance requirements of electrical equipment in special environments, but also greatly improves the working conditions of operation and maintenance personnel, reflecting the advantages of ergonomic principles and technological progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0034] Figure 1This is a schematic diagram of the structure of the utility model from the first perspective;

[0035] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0036] Figure 3 This is a schematic diagram of the structure of the insulating baffle of the utility model;

[0037] In the figure: 1. chassis, 2. mounting base, 3. screw, 4. lightning arrester, 5. lightning arrester counter, 6. voltage transformer, 7. trolley contact arm, 8. plum blossom contact, 9. insulating baffle, 10. detuning device, 11. aviation plug, 12. observation window, 13. roller, 14. handle, 15. basic insulating unit, 16. composite reinforcement layer, 17 elastic buffer structure. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0039] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0040] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] Example

[0042] Reference Figure 1~Figure 3 , is an embodiment of the utility model, and proposes

[0043] A 35KV handcart suitable for high altitude, including:

[0044] A mounting base 2, used for being mounted on a switch cabinet;

[0045] The chassis 1 is slidably arranged on the mounting seat 2;

[0046] The lead screw 3 is rotatably arranged on the mounting seat 2 , and the chassis 1 is threadedly arranged on the lead screw 3 . After the lead screw 3 rotates, the chassis 1 moves along the axial direction of the lead screw 3 .

[0047] In this embodiment, a 35KV intelligent electric operation trolley suitable for high altitude environment is provided, and its main improvement is that the trolley can be automatically entered and exited through the mechanical transmission structure, which greatly improves the work efficiency and enhances the operation safety. Specifically, the 35KV trolley mainly includes the following components: 1. Mounting seat 2: First, a sturdy and durable mounting seat 2 is designed, which is precisely fixed at the preset position inside the switch cabinet to ensure good docking and stable support with the switch cabinet. 2. Chassis 1: The chassis 1 contains the main body of the high-voltage circuit breaker and other key electrical components, which form a sliding fit relationship with the mounting seat 2 through the slide rail, and can move smoothly back and forth on the mounting seat 2. In order to adapt to the harsh environment of high altitude areas, the chassis 1 is made of reinforced insulating material and is specially processed to improve its insulation performance and mechanical strength in a low pressure environment. 3. Screw 3 transmission mechanism: The screw 3 transmission design is innovatively introduced, the screw 3 is rotated and set inside the mounting seat 2, and the chassis 1 is connected to the screw 3 by threading. When the lead screw 3 rotates driven by the motor, based on the principle of the lead screw 3 nut, the chassis 1 will achieve precise and smooth linear movement along the axial direction of the lead screw 3, thereby completing the automatic forward and backward operation of the trolley. Through the above design, the staff only needs to start the motor through remote control or panel operation to drive the lead screw 3 to rotate, thereby driving the trolley to automatically slide in or out of the switch cabinet, completely avoiding the inefficiency and safety hazards caused by traditional manual pushing. This design is particularly suitable for the operation of power facilities in high-altitude areas. It not only meets the high-performance requirements of electrical equipment in special environments, but also greatly improves the working conditions of operation and maintenance personnel, reflecting the advantages of ergonomic principles and technological progress.

[0048] Furthermore, it also includes:

[0049] A lightning arrester 4 is arranged on the chassis 1;

[0050] A lightning protection counter 5 is arranged on the chassis 1 . The lightning protection counter 5 is connected to the lightning arrester 4 . The lightning protection counter 5 is used to detect the lightning arrester 4 .

[0051] In this embodiment, the 35KV trolley designed for high-altitude environment is also specially equipped with a lightning arrester 4 and its matching lightning arrester counter 5 device, aiming to enhance the lightning protection capability and operation status monitoring function of the system. The specific implementation is as follows: 1. Lightning arrester 4: installed at a suitable position of the chassis 1. Preferably, the lightning arrester 4 is selected to be a model with high-altitude adaptability. It uses a specially designed nonlinear resistance element inside, which can quickly transform the impedance when encountering lightning overvoltage, and conduct the lightning current into the earth, effectively protecting the high-voltage equipment inside the trolley from lightning damage, and ensuring the stable operation of the power system in the complex climate environment at high altitudes. 2. Lightning arrester counter 5: also set on the chassis 1, closely connected to the lightning arrester 4. The lightning arrester counter 5 is an intelligent device that can monitor and record the number of times the lightning arrester 4 is actuated in real time. When the lightning arrester 4 is struck by lightning, the electronic components inside it will capture the action signal of the lightning arrester 4 and convert each action into a readable count value, so that the operation and maintenance personnel can timely understand the actual working condition of the lightning arrester 4, judge its remaining service life, and replace it in advance if necessary, so as to prevent potential electrical risks caused by the failure of the lightning arrester 4. In summary, this high-altitude 35KV trolley integrates the lightning arrester 4 and the lightning arrester counter 5, which not only strengthens the lightning protection capability of the overall equipment, but also realizes real-time monitoring of the equipment operation status, greatly improves the safety and reliability of the power system, and fully demonstrates the technical innovation of the utility model in the efficient protection and intelligent management of power equipment in high-altitude environments.

[0052] Furthermore, it also includes:

[0053] There are a plurality of voltage transformers 6, and the plurality of voltage transformers 6 are all arranged on the chassis 1;

[0054] A trolley contact arm 7 is provided on the chassis 1;

[0055] The plum blossom contact 8 is arranged on the trolley contact arm 7, and the plum blossom contact 8 is used to abut against the switch cabinet contact.

[0056] In this embodiment, in order to adapt to the high-altitude working environment, the 35KV trolley is specially equipped with multiple voltage transformers 6, trolley contact arms 7 and plum blossom contacts 8 to achieve more accurate voltage measurement and reliable electrical connection. The specific implementation steps are as follows: 1. Voltage transformer 6: Several dedicated high-precision voltage transformers 6 are set at appropriate positions inside or outside the chassis 1. These voltage transformers 6 have been specially designed and tested to ensure that the voltage of the high-voltage circuit can still be accurately converted to the secondary side in a high-altitude low-voltage environment, which is convenient for electrical measuring instruments to read and the action judgment of the protection device, and improves the monitoring and protection level of the entire power system. 2. Trolley contact arm 7: A pair of trolley contact arms 7 are installed on the chassis 1. They are made of high-quality conductive materials, have good mechanical strength and corrosion resistance, ensure good contact during long-term operation, and are not easy to deform or damage. The design of the trolley contact arm 7 enables the trolley to flexibly and stably dock with the corresponding components inside the switch cabinet during the process of pushing in or pulling out the switch cabinet. 3. Plum blossom contact 8: The end of the trolley contact arm 7 is equipped with a plum blossom contact 8, which is a multi-point contact electrical connection component. Its design is inspired by the shape of plum petals, which can provide a large contact area and uniform pressure distribution, thereby ensuring that in a high-altitude environment, even if it is affected by factors such as temperature changes and air pressure fluctuations, it can maintain stable electrical contact performance and effectively prevent problems such as heating and sparking caused by poor contact. When the 35KV trolley slides into the switch cabinet, the plum blossom contact 8 is tightly abutted against the corresponding contact inside the switch cabinet to achieve the closure of the main circuit. At this time, the voltage transformer 6 starts to work, transmitting voltage information in real time, ensuring the safe and efficient operation of the entire power system in high-altitude areas.

[0057] Furthermore, it also includes:

[0058] An insulating baffle 9 is provided on the chassis 1 and is located on one side of the voltage transformer 6 . The insulating baffle 9 is used to isolate the voltage transformer 6 from the switch cabinet.

[0059] In this embodiment, in order to increase the safety and reliability of the high-altitude 35KV trolley, an insulating baffle 9 is specially designed and added. The specific arrangement is as follows: Inside the chassis 1, especially on one side of the voltage transformer 6, an insulating baffle 9 made of high-quality insulating material is carefully installed. The main function of the baffle is to serve as a physical barrier to effectively isolate the direct contact between the voltage transformer 6 and the switch cabinet to prevent electrical safety accidents caused by high-voltage leakage, electromagnetic interference, etc. For example, when the trolley is inserted into the switch cabinet, the insulating baffle 9 will be close to the wall of the switch cabinet to form a strict insulation defense line, which can not only prevent the high-voltage breakdown phenomenon that may occur in the voltage transformer 6 under extreme conditions from affecting other parts of the switch cabinet, but also reduce the influence of electromagnetic field mutual interference on the voltage measurement accuracy, ensuring that during the operation of the entire power system, the voltage transformer 6 can work accurately and stably, provide effective voltage measurement data, and support the normal operation and protection action of the power system. In addition, considering that the air is thin in high-altitude environments and the insulation performance is relatively weakened, the selected insulating baffle 9 material should have higher insulation strength and good weather resistance to ensure that it can meet strict electrical insulation requirements at different altitudes and effectively protect the safety of equipment and personnel.

[0060] Further, the insulating baffle 9 comprises:

[0061] A basic insulation unit 15, wherein the basic insulation unit 15 is made of high-performance silicone rubber or ceramic material and is located close to a side of the voltage transformer 6;

[0062] A composite reinforcement layer 16 is provided on the basic insulation unit 15, wherein the composite reinforcement layer 16 is one or more layers of nanocomposite material coating;

[0063] An elastic buffer structure is provided between the chassis 1 and the composite reinforcement layer 16 , and the elastic buffer structure is used to provide a force to move the composite reinforcement layer 16 away from the chassis 1 .

[0064] In this embodiment, in order to improve the insulation performance and mechanical stability of the high-altitude 35KV trolley, a special insulating baffle 9 structure with multiple protection functions is designed. In the specific implementation, the insulating baffle 9 is mainly composed of the following parts: 1. Basic insulating unit 15: First, on the side closer to the voltage transformer 6, a basic insulating unit 15 is made of high-performance silicone rubber or ceramic material. These two materials are very suitable for use in high-altitude high-voltage environments due to their excellent electrical insulation performance and good heat resistance and aging resistance, and can effectively prevent electrical conduction between the voltage transformer 6 and the switch cabinet. 2. Composite reinforcement layer 16: On the surface of the basic insulating unit 15, one or more layers of nano-composite coating are coated to form a composite reinforcement layer 16. This nano-composite coating not only improves the overall insulation performance of the insulating baffle 9, but also enhances its wear resistance, corrosion resistance and UV resistance, thereby extending the service life of the insulating baffle 9. 3. Elastic buffer structure: A set of elastic buffer structure is specially designed between the basic insulating unit 15 and the chassis 1. This structure may be made of highly elastic polymer or other materials with buffering properties. Its function is to provide a continuous elastic force during the pushing or pulling of the trolley, so that the composite reinforcement layer 16 always maintains a certain distance away from the chassis 1, avoiding damage to the insulation material caused by severe impact, and also reducing the impact of vibration on the working stability of the voltage transformer 6. In this way, this high-altitude 35KV trolley successfully combines a variety of advanced materials and technical means by adopting the above-mentioned insulating baffle 9 structure, achieving excellent electrical isolation and mechanical protection between the voltage transformer 6 and the switch cabinet, and effectively ensuring the safe and stable operation of power equipment in complex and harsh high-altitude environments.

[0065] Furthermore, it also includes:

[0066] The detuning device 10 is arranged on the chassis 1 .

[0067] In this embodiment, in order to improve the running stability of the high-altitude 35KV trolley and reduce the risk of resonance, we specially add a harmonic elimination device 10 to the chassis 1. Specifically, the harmonic elimination device 10 is carefully placed at a specific position inside the chassis 1.

[0068] Furthermore, it also includes:

[0069] An aviation plug 11 is provided on the chassis 1 and is used to connect to external electrical components.

[0070] In this embodiment, in order to achieve convenient and safe connection with external electrical components, an aviation plug 11 device is specially provided on the chassis 1. Specifically, the aviation plug 11 is firmly installed at the preset interface position of the chassis 1. The interface is precisely designed and sealed to ensure dustproof, waterproof and corrosion-resistant performance in high-altitude environments. The aviation plug 11 is made of high-quality metal or composite materials, and the internal structure includes multi-pole pins and corresponding sockets. The poles have good electrical insulation, ensuring safe and reliable power transmission in a 35KV high-voltage environment.

[0071] As a further technical solution, the high-altitude 35KV trolley is characterized in that a plurality of observation windows 12 are provided on the chassis 1 , and the observation windows 12 are used to observe the interior of the chassis 1 .

[0072] As a further technical solution, the high-altitude 35KV handcart is characterized by also including:

[0073] There are a plurality of rollers 13 disposed on the chassis 1 , and the plurality of rollers 13 are located at the bottom of the chassis 1 .

[0074] Furthermore, it also includes:

[0075] The handle 14 is arranged at one end of the lead screw 3 .

[0076] In this embodiment, a number of transparent observation windows 12 are set at appropriate positions of the chassis 1. These observation windows 12 are made of high-strength, high-temperature-resistant, and anti-aging transparent materials, which can clearly see the operating status inside the chassis 1, such as the position of the high-voltage circuit breaker, the status of the indicator light, etc., and daily inspections and troubleshooting can be carried out without opening the chassis 1, which greatly improves the efficiency and safety of operation and maintenance. In order to facilitate the smooth sliding of the trolley in the switch cabinet, a number of rollers 13 are equipped at the bottom of the chassis 1. These rollers 13 are made of hard and wear-resistant materials, have low rolling resistance, and have strong bearing capacity. They can withstand heavy loads and maintain low-friction movement in high-altitude environments. The layout of the rollers 13 is scientific and reasonable, ensuring that the trolley can maintain stable operation and prevent sparks due to friction during the process of entering or exiting the switch cabinet, ensuring the safety and stability of the high-altitude power system. At one end of the screw 3, a firm and ergonomic handle 14 is specially designed. This handle 14 is made of insulating material, which can not only ensure the safety of the operator, but also make it more labor-saving and convenient when manually operating the screw 3 to adjust the position of the trolley. The operator can easily rotate the lead screw 3 by holding the handle 14, thereby controlling the precise sliding in or out of the trolley, which greatly improves the convenience and accuracy of equipment operation.

[0077] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A 35KV trolley suitable for high altitudes, characterized in that: include: A mounting base (2) for being arranged on a switch cabinet; A chassis (1) is slidably disposed on the mounting seat (2); A lead screw (3) is rotatably mounted on the mounting seat (2), and the chassis (1) is threadedly mounted on the lead screw (3), so that when the lead screw (3) rotates, the chassis (1) moves along the axial direction of the lead screw (3); A lightning arrester (4) is arranged on the chassis (1); A lightning arrester counter (5) is arranged on the chassis (1), the lightning arrester counter (5) is connected to the lightning arrester (4), and the lightning arrester counter (5) is used to detect the lightning arrester (4); A plurality of voltage transformers (6), wherein the plurality of voltage transformers (6) are arranged on the chassis (1); A trolley contact arm (7) is arranged on the chassis (1); A plum blossom contact (8) is arranged on the trolley contact arm (7), and the plum blossom contact (8) is used to abut against a switch cabinet contact; an insulating baffle (9) arranged on the chassis (1) and located on one side of the voltage transformer (6), the insulating baffle (9) being used to isolate the voltage transformer (6) from the switch cabinet; A harmonic elimination device (10) is arranged on the chassis (1); An aviation plug (11) is arranged on the chassis (1), and the aviation plug (11) is used to connect to an external electrical component; The insulating baffle (9) comprises: A basic insulation unit (15), the basic insulation unit (15) being made of high-performance silicone rubber or ceramic material, and the basic insulation unit (15) being located on a side close to the voltage transformer (6); A composite reinforcement layer (16) is arranged on the basic insulation unit (15), wherein the composite reinforcement layer (16) is one or more layers of nanocomposite material coating; An elastic buffer structure (17) is arranged between the chassis (1) and the composite reinforcement layer (16), the elastic buffer structure (17) being used to provide a force to move the composite reinforcement layer (16) away from the chassis (1).

2. A 35KV trolley suitable for high altitudes according to claim 1, characterized in that: A plurality of observation windows (12) are provided on the chassis (1), and the observation windows (12) are used to observe the interior of the chassis (1).

3. The 35KV trolley suitable for high altitude according to claim 1 is characterized in that: Also includes: There are a plurality of rollers (13) arranged on the chassis (1), and the plurality of rollers (13) are all located at the bottom of the chassis (1).

4. The 35KV trolley suitable for high altitude according to claim 1, characterized in that: Also includes: A handle (14) is arranged at one end of the lead screw (3).

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